Inclosed lighting fixture



Feb. 11, 1930. L. c. DOANE v 1,746,339

INCLOSED LIGHTING FIXTURE Filed July 20, 1927 "x 34qlilllllllllllllllllllllm i III,

INVENTOR Zenzy C 30412:

. [Ag ATTORNEY Patented Feb. 11, 1930 UNITED STATES PATENT QFFICE LEROYC. DOANE, OFMERIDEN, CONNECTICUT, ASSIGNOR ro TH-E MILLER COMPANY,

or MERIDEN, CONNECTICUT, A oonronnrron or CONNECTICUT INCLOSEID LIGHTINGFIXTURE Application fi led July 20,

carried by thebus ceiling or other supporting structure. Thelamp socketis permanently supported by the shade holder and the shade holder, is,according to the present invention,

provided with an arrangement. of lugs adapted to cooperate with asuitable shade supporting ring so that the shade withring attached to itmay be;quickly and easily mounted in the shade support.

An object of the present invention is to providea metal supporting ringwhich is non-rotatably carried by the glass shade in such a way that thering and shade may be handled as a unit in attaching the unit to thesupporting shade holder.

"Another object of the invention is to provide a small inclosed shade ofdiffusing glassg ware of such shape that light may be directed wallsas,"

onto the busceiling and upper side well as downwardly. t Other andfurther objects of the invention will appear as the descriptionproceeds.

The accompanying drawings show, for'purposes of illustration, one of themany possible embodiments in which the present invention may take form,it being understood that the drawings are illustrative of the inventionrather than limiting the same. In these drawings: i Figure 1 is asectional View of an inclosed lighting unit, parts being shown inelevation; Figure 2 is a to ilplan view of the shade or globe and shadeolcling ring, parts being shown in section approximately on the line 22of Figure 1; and

ings forming the shade holding ring.

A support, such as the ceiling of a bus, s

indicated at 10. A metal shade support 11 is mounted in a suitable holeor opening ina 1927. Serial No. 207,086.

bus ceiling being supported in place by screws 12. A lamp socket 13 ofthe type ordinarily 'used in automotive electrical equipment issupported in the shade support 11 by means of a strap 14 which isfastened to the shade support by screws 15. Thesescrews also supportarcuate springs 16 and 17. The

shade support 11 is open from underneath and the interior of the shadesupport is provided at the lower end with sloping shoulders indicatedindotted lines at 18 and with suitable recesses or dwells 19 to receivelugs carried on the shade holding ring.

A shade 20 preferably made of diffusing glass has, as here shown, acurved bottom 21, conical side walls 22 and inwardly flaring upper walls23. Theupper walls 23 terminatein a short tubular neck 2 1. This neck isapproximately cylindrical but is, as here shown, provided withindentations 25, 26, 27

and 28.

An upper shade holder ring 29 is shown more 111 deta1l1n Flgure The rlnghas four inwardly bent lugs or prongs 30, 31, 32 and 33 adapted to fitinto the indentations 25, 26,

,27 and. 28,011 the glass shade so as to prevent relative rotation ofthe shade and ring. The shade ring 29 is also provided with a downwardlydirected internally threaded central portion 32 spaced sulficiently fromthe outer wall or skirt 33so as to pass down inside the neck 24; of theglass shade. A. locking ring 3% shown-morein detailin Figure 4 isprovided with an upwardly drawn threaded portion 35 adapted to cooperatewith the threads 32 on the locking ring 29. The look ing ring has cutawaysides indicated at 36 and 37 to permit passing it downwardly throughthe opening in the glass shade. The

flanges 38 and39 of the locking ring are I adapted to engage underneaththe glass shade as indicated more clearly at the left of Figure 1; Tofacilitate assembling the "two rings the lockingring 34Lis provided witht i r a number ofinwardly bent prongs 40 which Figure 3 is a perspectiveView of two stamp- ,parts together and securely fastening the globebetween two rings; Theglobe and two into the recessby the springs 16 and17 above referred to.v

This form of bus lightin unit is well suited with large size lamp bulbsand yet is capable of being mounted very close to the ceiling with theattendant advantages. By

1 making the shade out of diffusing glass soft even li ht is sent out inall directions and the CElhD 'Z and upper side walls of the bus arelighted instead of being dark. The shade may be, readily'reinovedforinspection, cleaning and replacementof lamps.

I claim:

1. An inclosed lighting. unit comprising a glass globe closed at thebottom and haviing a neckat the upper end, a threaded ring outwardlyflanged at its lower end, the ring heinginsertable through the neck ofthe globeto brin the flange underneath a portion of the globe, a.coverring having an outer por tion which passes down outside the neck ofthe globe anda second threaded portion cooperative with the threadedring for clamphaving a narrow neck. or ople ing the globe betweentherings, the outer portion of'the cover ring and the neck of the globebeing non-circular to prevent" relative rotation.

2. An inclosed lighting unit comprising a glass .globeclosed at thebottom and having a neck at the upper end, a threaded ringoutwardlyflanged at its lower end, thering being insertable through the neck of.the

globe to bring the flange underneath a por 5. A holder for inclosedglobes, said holder comprising two rings threaded together, one ringhaving an outwardly extending flange at its lower end while the otherring has an outwardly extending flange at its upper end and askirtextending downwardly from the flange, said skirt having inwardly struckprongs for non-rotatably engaging a shade.

6. A holder for inclosed; globes, said holder comprising two:- ringsthreaded together, one ring having an outwardly extending flange at itslower end while the other ring has an outwardly extending flange at itsupper end and a skirt extending downwardly from the flange, said skirthaving inwardly struck prongs for non-rotatably engaging a shade andoutwardly struck prongs to engage a shade support.

71 A bus light comprising an. automotive lamp socket, a lamp bulb. inthe socket, a shade support about the lamp socket, a glass shade closedat the bottom and having a narrow neck at the top, and a pair ofmetalshade holding rings threaded together and non rotatably clamped tothe neck of the glass shadeso that the shade and rings become apermanent subassembly, the outer' ring being coperative with the shadesupport for removably carrying the-shade from the shade support, theholein the rings being slightly larger than the. bulb to permit removalof the shade and ringsfrom the-shadesupport.

Signed at Meriden, in the county of New Havenv and State of Connecticut,this 16th day of'July, 1927.

LEROY C. DOANE.

tion of the globe, a cover ring'havin'g an outer portion which passesdown outside the neck of the globe and a second threaded portioncooperative withthethreaded ring for clamping the globe between therings, the

outer portion of the cover ring and the neck of the globe beingnon-circular to prevent relative rotation, the threaded portion of thefirst mentioned ring, having inwardly bent tool engaging prongs tofacilitat threading the two rings together.

3..A glass globe for inclosed bus lights, comprising a substantiallyclosed glass bowl having a narrow neck oropeningqat the to said neckhaving uniformly straight si e walls and being ofnon-circularconfiguration. 4'. A glassv globe for in'closedfbuslightscomprising a substantially closed glass bowl ning at the to j, said neckhaving st raig t side walls, said side walls having pockets or"recessesextendin in the directlon' oi the axis of the @obe; for receiving prongson a cover. ring orthe like;

